Hi, I am pulling my hair out at the moment. Made a simple room geometry in Lightwave 11.0.2. Saved it as LWO file and imported that file into Poser Pro 2012. Unfortunately the shading seems to be wrong (see screenshot). Checked everything that came into my mind (non planar polys, double sided, double polygons in same space, etc.), tried with export to obj and import that obj into Poser (result is the same).

Now I am running out of ideas. Maybe there is an obvious mistake which I just can't see?

Any help is appreciated.